/*
 * Copyright (c) 1995 - 2008 Sun Microsystems, Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Sun Microsystems nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/* Følgende kode er frit kopieret fra
 http://java.sun.com/docs/books/tutorial/uiswing/examples/components/CustomComboBoxDemoProject/src/components/CustomComboBoxDemo.java
*/

package Views;

import java.awt.Component;
import java.awt.Font;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.ListCellRenderer;

class ComboBoxRenderer extends JLabel implements ListCellRenderer
{
	private Font uhOhFont;
	private String[] titles;
	private ImageIcon[] images;

	public ComboBoxRenderer(String[] titles, ImageIcon[] images)
	{
		this.titles = titles;
		this.images = images;
		setOpaque(true);
		setHorizontalAlignment(LEFT);
		setVerticalAlignment(CENTER);
	}

	/*
	 * This method finds the image and text corresponding
	 * to the selected value and returns the label, set up
	 * to display the text and image.
	 */
	public Component getListCellRendererComponent(
									   JList list,
									   Object value,
									   int index,
									   boolean isSelected,
									   boolean cellHasFocus) {
		//Get the selected index. (The index param isn't
		//always valid, so just use the value.)
		int selectedIndex = ((Integer)value).intValue();

		if (isSelected) {
			setBackground(list.getSelectionBackground());
			setForeground(list.getSelectionForeground());
		} else {
			setBackground(list.getBackground());
			setForeground(list.getForeground());
		}

		//Set the icon and text.  If icon was null, say so.
		ImageIcon icon = images[selectedIndex];
		String title = titles[selectedIndex];
		setIcon(icon);
		if (icon != null) {
			setText(title);
			setFont(list.getFont());
		} else {
			setUhOhText(title, list.getFont());
		}

		return this;
	}

	//Set the font and text when no image was found.
	protected void setUhOhText(String uhOhText, Font normalFont) {
		if (uhOhFont == null) { //lazily create this font
			uhOhFont = normalFont.deriveFont(Font.ITALIC);
		}
		setFont(uhOhFont);
		setText(uhOhText);
	}
}